TWI699131B - Device and method of handling system information - Google Patents

Abstract

A communication device for handing system information comprises a storage unit for storing instructions and a processing means coupled to the storage unit. The processing means is configured to execute the instructions stored in the storage unit. The instructions comprise receiving a system information comprising at least one of a freqBandIndicator and a first multiBandInfoList from a first cell in a radio resource control (RRC) connected mode; and not disregarding the at least one of the freqBandIndicator and the first multiBandInfoList in the system information.

Description

Device and method for processing system information

The present invention relates to a communication device and method used in a wireless communication system, especially a communication device and method for processing system information in a wireless communication system.

The Long Term Evolution (LTE) system provides high data transmission rate, low delay time, packet optimization, and improvement of system capacity and coverage. It includes at least one evolved base station (evolved Node-Bs, eNBs). Evolved Universal Terrestrial Radio Access Network (E-UTRAN), which communicates with at least one user equipment (UE) on the one hand, and handles non-access The core network controlled by the layer (Non Access Stratum, NAS) communicates, and the core network includes entities such as a serving gateway and a mobility management unit (MME).

The LTE-advanced (LTE-A) system is evolved from the long-term evolution system, which includes advanced technologies such as carrier aggregation and the use of long-term evolution licensed-assisted access (LAA) , In order to extend the cell coverage of the evolutionary base station, increase the peak data transmission rate and throughput (throughput).

In the radio resource control (RRC) connection mode, the client can receive at least one system information block (SIB) from a cell on the network. According to the 3GPP standard, in the radio resource control connection mode, the user terminal disregards at least one information element (IE) in at least one system information block. Therefore, in the radio resource control connection mode, the client does not apply at least one information element in at least one system information block before receiving a dedicated signal.

Therefore, how to deal with at least one system information block from the network is an urgent problem to be solved.

Therefore, the present invention provides a communication device and method for processing system information to solve the above-mentioned problems.

The present invention discloses a communication device for processing system information. The communication device includes a storage unit and a processing device coupled to the storage unit. The processing device is configured to execute the instructions stored in the storage unit. The command includes receiving a system information from a first cell in a radio resource control (RRC) connection mode, including at least one of a freqBandIndicator and a first multiBandInfoList; and considering ( not disregarding) the at least one of the freqBandIndicator and the first multiBandInfoList in the system information.

The present invention further discloses a communication device for processing a system information. The communication device includes a storage unit and a processing device coupled to the storage unit. The processing device is configured to execute Row instructions stored in the storage unit. The command includes receiving a system information from a first cell; and in the first cell, in a radio resource control connection mode, disregarding a first AdditionalSpectrumEmission and a first ul- in the system information. CarrierFreq and a first multiBandInfoList.

The present invention further discloses a communication device for processing a system information. The communication device includes a storage unit and a processing device coupled to the storage unit. The processing device is configured to execute the instructions stored in the storage unit. The command includes receiving a first system information from a first cell in a radio resource control idle mode; after receiving the first system information, initiating a radio resource with the first cell The control connection establishment procedure is used to enter a radio resource control connection mode; in the radio resource control connection mode, at least one of a first freqBandIndicator and a first multiBandInfoList in the first system information is considered; In the radio resource control connection mode, the communication device supports a frequency band, which is instructed to apply a first AdditionalSpectrumEmission in the first system information in the first freqBandIndicator in the first system information; and if In the radio resource control connection mode, the communication device supports the frequency band and is instructed to apply a second AdditionalSpectrumEmission in the first system information in the first multiBandInfoList in the first system information.

10: Wireless communication system

20: Communication device

200: processing device

210: storage unit

214: program code

220: Communication interface unit

30, 40, 50: process

300, 302, 304, 306, 400, 402, 404, 406, 500, 502, 504, 506, 508, 510, 512: steps

Figure 1 is a schematic diagram of a wireless communication system according to an embodiment of the present invention.

Figure 2 is a schematic diagram of a communication device according to an embodiment of the present invention.

Figure 3 is a flowchart of a process according to an embodiment of the present invention.

Figure 4 is a flowchart of a process according to an embodiment of the present invention.

Figure 5 is a flowchart of a process according to an embodiment of the present invention.

FIG. 1 is a schematic diagram of a wireless communication system 10 according to an embodiment of the present invention. The wireless communication system 10 can be simply composed of a network terminal and a plurality of communication devices. In Figure 1, the network terminal and the communication device are used to illustrate the architecture of the wireless communication system 10. In the Universal Mobile Telecommunications System (UMTS), the network end may be the Universal Terrestrial Radio Access Network (UTRAN), which includes at least one base station (Node-B, NB) and/or Radio Network Controller (RNC). In the Long Term Evolution (LTE) system, the LTE-Advanced (LTE-A) system, or the follow-up version of the LTE-A system, the network end can be an evolved universal terrestrial global wireless access The network (evolved universal terrestrial radio access network, E-UTRAN) may include at least one evolved base station (evolved NB, eNB) and/or at least one relay station (relay). The network end may be a fifth generation (5G) network, which includes at least one fifth generation base station (BS). Fifth generation base stations can use orthogonal frequency-division multiplexing (OFDM) and/or non-orthogonal frequency-division multiplexing (non-OFDM), as well as the transmission time interval for communicating with communication devices ( The transmission time interval (TTI) is less than 1 millisecond (millisecond, ms). Generally speaking, a base station (BS) can be any of a base station (NB), a radio network controller, an evolved base station, and a fifth-generation base station.

Communication devices can be user equipment (UE), low-cost devices (such as machine type communication (MTC)), mobile phones, notebook computers, tablet computers, e-books, portable computer systems, Devices such as vehicles and airplanes. In addition, according to the transmission direction, the network end and the communication device can be regarded as the transmitting end or the receiving end respectively. For example, for a chain For uplink (UL), the communication device is the transmitter and the network is the receiver; for the downlink (DL), the network is the transmitter and the communication device is the receiver.

FIG. 2 is a schematic diagram of a communication device 20 according to an embodiment of the present invention. The communication device 20 can be the communication device or the network terminal in FIG. 1, and includes a processing device 200, a storage unit 210 and a communication interface unit 220. The processing device 200 can be a microprocessor or an Application-Specific Integrated Circuit (ASIC). The storage unit 210 can be any data storage device for storing a program code 214, and the processing device 200 can read and execute the program code 214 through the storage unit 210. For example, the storage unit 210 may be a subscriber identity module (SIM), a read-only memory (Read-Only Memory, ROM), a random-access memory (Random-Access Memory, RAM), and a hard disk. Hard disk, optical data storage device, non-volatile storage unit, non-transitory computer-readable medium (e.g. specific Tangible media), etc., but not limited to this. The communication interface unit 220 may be a wireless transceiver, which is used to transmit and receive signals (such as data, signals, messages, or packets) according to the processing result of the processing device 200. To simplify the description, in the following embodiments, the user terminal is used to represent the communication device in Figure 1.

Figure 3 is a flowchart of a process 30 according to an embodiment of the present invention, which is used in a client in Figure 1 to process system information. The process 30 can be compiled into the program code 214, which includes the following steps:

Step 300: Start.

Step 302: In a radio resource control (RRC) connection mode, receive a system information from a first cell, which includes at least one of a freqBandIndicator and a first multiBandInfoList.

Step 304: Consider (not disregard) the freqBandIndicator and The at least one of the first multiBandInfoList.

Step 306: End.

According to the process 30, in the radio resource control connection mode (for example, RRC_CONNECTED), the user terminal can receive system information from the first cell, which includes at least one of freqBandIndicator and the first multiBandInfoList. Then, in the first cell, the user terminal can consider at least one of freqBandIndicator and the first multiBandInfoList in the system information. That is, in the radio resource control connection mode, after receiving the system information, the user end can consider freqBandIndicator and the first multiBandInfoList. The first multiBandInfoList indicates at least one frequency band, where the first cell is operated on the at least one frequency band. System information can include at least one of system information block (SIB) type 1 (SIB1) and system information block type 2 (SIB2). The system information can be broadcasted in the first through the base station. Cell.

There are many ways to implement the process 30, which are not limited to the above. The following embodiments can be used in the process 30.

In an embodiment, when the user terminal controls the idle mode of the radio resource in the first cell, the user terminal may consider at least one of freqBandIndicator and the first multiBandInfoList.

In one embodiment, when freqBandIndicator is used in the radio resource control connection mode, according to the freqBandIndicator in the system information (for example, system information block type 1), the client in the first cell can further apply the system information (for example, the system information area). Block Type 1 or System Information Block Type 2) the first AdditionalSpectrumEmission. Or, when the frequency band in the first multiBandInfoList in the system information is applied in the radio resource control connection mode, the frequency band in the first cell The middle client can apply the second AdditionalSpectrumEmission in the system information (for example, system information block type 2). That is, when the application is indicated in the frequency band of different information elements (for example, freqBandIndicator or the first multiBandInfoList), the user end can apply (or use) different AdditionalSpectrumEmission. The first AdditionalSpectrumEmission and/or the second AdditionalSpectrumEmission can be included in the second multiBandInfoList of the system information.

In an embodiment, according to at least one frequency band, the user terminal can apply freqBandIndicator or the frequency band in the first multiBandInfoList, wherein the user terminal is capable of operating on the at least one frequency band. In an embodiment, the frequency bands in the first multiBandInfoList may be the frequency bands in the first list, and the user terminal is capable of operating on this frequency band. In one embodiment, after the user terminal considers at least one of freqBandIndicator and the first multiBandInfoList in the system information, when the user terminal supports the frequency band and is instructed to include at least one of the freqBandIndicator and the first multiBandInfoList in the system information, the user terminal Determine its ability to receive and transmit data.

In an embodiment, the user terminal may receive a handover command from the second cell. Before receiving the system information of the first cell (for example, system information block type 1), according to the handover command, the client can execute the handover operation from the second cell to the first cell. Then, according to the handover command, the user terminal can determine the frequency band of the first cell. After performing the handover operation and receiving the system information of the first cell, if the frequency band is indicated in freqBandIndicator in the system information, the client can apply the first AdditionalSpectrumEmission corresponding to the frequency band, and if the frequency band is indicated in the system information In a multiBandInfoList, the user terminal can apply the third AdditionalSpectrumEmission corresponding to the frequency band in the system information. The third AdditionalSpectrumEmission can be included in the second multiBandInfoList in the system information, and the third AdditionalSpectrumEmission can be the same or different from the second AdditionalSpectrumEmission. In other words, according to the handover command, the user can decide Fixed frequency band, and according to the position of the frequency band indicated (for example, freqBandIndicator or the first multiBandInfoList), the user terminal can determine which AdditionalSpectrumEmission should be applied.

Therefore, when the user terminal considers at least one of freqBandIndicator and the first multiBandInfoList in the system information, according to the location of the frequency band, in the radio resource control connection mode, the user terminal knows how to apply the first AdditionalSpectrumEmission or the second additionalSpectrumEmission in the system information. AdditionalSpectrumEmission.

Figure 4 is a flowchart of a process 40 according to an embodiment of the present invention, which is used in a client in Figure 1 to process system information. The process 40 can be compiled into the program code 214, which includes the following steps:

Step 400: Start.

Step 402: Receive a system information from a first cell.

Step 404: In the first cell, in a radio resource control connection mode, a first AdditionalSpectrumEmission, a first ul-CarrierFreq, and a first multiBandInfoList in the system information are disregarded.

Step 406: End.

According to the process 40, in the radio resource control idle mode or the radio resource control connected mode (for example, RRC_CONNECTED), the user terminal can receive system information from the first cell. Then, in the first cell, in the radio resource control connection mode, the user terminal may not consider the first AdditionalSpectrumEmission, the first ul-CarrierFreq, and the first multiBandInfoList in the system information. That is to say, when in the first cell, the client is in the radio resource control connection mode, the client may not apply (or not use) the first AdditionalSpectrumEmission, the first ul-CarrierFreq, and the first Any AdditionalSpectrumEmission in multiBandInfoList. The system information may include at least one of system information block type 1 and system information block type 2, and the system information may be broadcast on the first cell through the base station. The first AdditionalSpectrumEmission, the first ul-CarrierFreq, and the first multiBandInfoList can be in the system information block type 1 or the system information block type 2.

There are many ways to implement the process 40, which are not limited to the above. The following embodiments can be used in the process 40.

In one embodiment, when in the first cell, the client is in the radio resource control connection mode, in the first cell, the client may not consider the first freqBandIndicator and the first freqBandIndicator in the system information (such as system information block type 1). Two multiBandInfoList. In the radio resource control idle mode or the radio resource control connection mode, the client can receive system information from the first cell. In other words, not only can the client not consider the first AdditionalSpectrumEmission, the first ul-CarrierFreq, and the first multiBandInfoList in the system information (such as system information block type 1 or system information block type 2), but also the first additional spectrum in the system information. One freqBandIndicator and second multiBandInfoList. The second multiBandInfoList indicates at least one frequency band, where the first cell can be operated on the at least one frequency band.

In an embodiment, the user terminal may receive a handover command from the second cell. Before receiving system information, according to the handover command, the client can execute the handover operation from the second cell to the first cell. Then, according to the handover command, the user terminal can determine the frequency band of the first cell. After performing the handover operation, the client can receive system information. If the frequency band is indicated in the first freqBandIndicator, the user terminal can apply the first AdditionalSpectrumEmission in the system information. Or, if the frequency band is indicated in the second multiBandInfoList in the system information, the user terminal can apply the second AdditionalSpectrumEmission corresponding to the frequency band in the first multiBandInfoList in the system information. In other words, according to the handover command, the user can decide Frequency band, and according to the position where the frequency band is indicated (for example, the first freqBandIndicator or the second multiBandInfoList), the user terminal can decide which AdditionalSpectrumEmission should be applied.

Therefore, in the radio resource control connection mode, the problem of the conventional technology can be solved by not considering the first multiBandInfoList in the system information. That is, the user terminal may not apply (or use) any AdditionalSpectrumEmission in the first multiBandInfoList in the system information, which is used to perform a transmission with the cell. Therefore, the client can correctly apply any AdditionalSpectrumEmission for the transmission.

Figure 5 is a flowchart of a process 50 according to an embodiment of the present invention, which is used in a client in Figure 1 to process system information. The process 50 can be compiled into the program code 214, which includes the following steps:

Step 500: Start.

Step 502: In a radio resource control idle mode, receive a first system information from a first cell.

Step 504: After receiving the first system information, initiate a radio resource control connection establishment procedure with the first cell, which is used to enter a radio resource control connection mode.

Step 506: In the radio resource control connection mode, consider at least one of a first freqBandIndicator and a first multiBandInfoList in the first system information.

Step 508: If the UE supports a frequency band in the radio resource control connection mode, it is instructed to apply a first AdditionalSpectrumEmission in the first system information in the first freqBandIndicator in the first system information.

Step 510: If the client supports the frequency band in the radio resource control connection mode, it is instructed to use the first system resource in the first multiBandInfoList in the first system information The second AdditionalSpectrumEmission in the news.

Step 512: End.

According to the process 50, in the radio resource control idle mode, the user terminal can receive the first system information from the first cell. After receiving the first system information, the client can initiate a radio resource control connection establishment procedure with the first cell, which is used to enter the radio resource control connection mode (for example, RRC_CONNECTED). In the first cell, in the radio resource control connection mode, the user terminal may consider at least one of the first freqBandIndicator and the first multiBandInfoList in the first system information. Then, if the user terminal supports the frequency band in the radio resource control connection mode, which is indicated in the first freqBandIndicator in the first system information, the user terminal can apply the first AdditionalSpectrumEmission in the first system information. If in the radio resource control connection mode, the user end supports the frequency band, which is indicated in the first multiBandInfoList in the first system information, and the user end can apply the second AdditionalSpectrumEmission in the first system information. In other words, when the user terminal transitions from the radio resource control idle mode to the radio resource control connection mode, and the first freqBandIndicator and the first multiBandInfoList are considered in the radio resource control connection mode, the user terminal can apply the first AdditionalSpectrumEmission or the second AdditionalSpectrumEmission . The first system information on the first cell may include at least one of the first system information block type 1 and the second system information block type 2, and the first system information may be broadcast in the first cell through the base station on.

There are many ways to implement the process 50, which are not limited to the above. The following embodiments can be used in the process 50.

In an embodiment, the first AdditionalSpectrumEmission and/or the second AdditionalSpectrumEmission may be included in the second multiBandInfoList in the first system information in.

In one embodiment, the frequency band in the first multiBandInfoList indicated in the first system information (for example, the first system information block type 1) is the first frequency band, which is listed in the first multiBandInfoList in order. In one embodiment, when receiving the first message (message), the client can apply additionalSpectrumEmissionSCell-r10 for the first cell and at least secondary cell (SCell), wherein the first message setting has the same configuration as the first cell. The at least primary cell of the frequency band of a cell, and includes additionalSpectrumEmissionSCell-r10, which indicates network signaling (NS) for the first cell and the at least primary cell. The user terminal can receive a second message from the first cell, which is used to release all at least one-time cells. After releasing all at least primary cells, if the client supports the frequency band indicated in the first freqBandIndicator, the client can apply the first system information (for example, the first system information block type 1 or the first system information block type 2) In the first AdditionalSpectrumEmission, instead of applying additionalSpectrumEmissionSCell-r10. If in the radio resource control connection mode (such as RRC_CONNECTED), the client supports the frequency band indicated in the first multiBandInfoList in the first system information (such as the first system information block type 1), the client can apply the first system information (For example, the first system information block type 1 or the first system information block type 2) in the second AdditionalSpectrumEmission instead of applying additionalSpectrumEmissionSCell-r10. Further, the first message may be a first RRCConnectionReconfiguration message, and the second message may be a second RRCConnectionReconfiguration message. The first and second RRCConnectionReconfiguration messages may or may not include the mobilityControlInfo from the first cell.

In one embodiment, when the cell is activated at least once, the user terminal may Apply additionalSpectrumEmissionSCell-r10 for the first cell and at least the primary cell. In one embodiment, if at least one of the required cells is not released and no at least one of the required cells is activated, if the client supports the frequency band indicated in the first freqBandIndicator, the client can use the first system information The first AdditionalSpectrumEmission, and if the client supports the frequency band indicated in the first multiBandInfoList in the first system information, the client can apply the second AdditionalSpectrumEmission in the first system information. In other words, according to whether the secondary cell is activated, the client can decide which AdditionalSpectrumEmission to apply.

In one embodiment, the user terminal may receive a handover command from the second cell, which includes the third AdditionalSpectrumEmission, carrierFreq, or carrierFreq-v9e0. According to the handover command, the client can execute the handover operation from the first cell to the second cell. Then, the user terminal can apply the third AdditionalSpectrumEmission in the handover command, which is used to perform transmission with the second cell. After performing the handover operation, the client can receive the second system information from the second cell, which includes the second system information type 1 and the second system information type 2. Accordingly, if the client supports the frequency band in the radio resource control connection mode, it is indicated in the second freqBandIndicator in the second system information of the second cell (for example, the second system information type 1 or the second system information type 2) In the second system information (for example, the second system information type 1 or the second system information type 2), the client can use the fourth AdditionalSpectrumEmission. If in the radio resource control connection mode, the client supports the frequency band, which is indicated in the third multiBandInfoList in the second system information, the client can apply the fifth AdditionalSpectrumEmission in the second system information of the second cell, which is based on carrierFreq or carrierFreq-v9e0, the frequency band is obtained. That is, before receiving the second system information of the second cell, the client can apply (or use) the third AdditionalSpectrumEmission in the handover command. After receiving the second system information of the second cell, according to the indicated position of the frequency band (for example, the second freqBandIndicator or the third multiBandInfoList), the user terminal can determine which AdditionalSpectrumEmission should be applied. use. The fourth AdditionalSpectrumEmission and/or the fifth AdditionalSpectrumEmission may be included in the fourth multiBandInfoList in the second system information of the second cell.

Therefore, when the user terminal is in the radio resource control mode, if the user terminal supports the frequency band, it is indicated in the first freqBandIndicator in the first system information, the user terminal can apply the first AdditionalSpectrumEmission; and if the user terminal supports the frequency band, its Instructed in the first multiBandInfoList in the first system information, the client can apply the second AdditionalSpectrumEmission in the second multiBandInfoLis. Therefore, the problems of the conventional technology can be solved.

In an embodiment of the processes 30-50, the client can support communication with a plurality of multi-band cells. In an embodiment of the processes 30-50, "not considered" may mean "not used" or "not applied".

Those with ordinary knowledge in the art can combine, modify, or change the above-mentioned embodiments according to the spirit of the present invention, but are not limited thereto. Any of the above processes can be compiled into the program code 214. The foregoing statements, steps, and/or processes (including recommended steps) can be implemented by devices, which can be hardware, software, firmware (a combination of hardware devices and computer commands and data, and computer commands and data belong to hardware Read-only software on the device), an electronic system, or a combination of the above devices, where the device may be the communication device 20.

In summary, the present invention provides an apparatus and method for processing system information. In the radio resource control connection mode, by considering at least one of freqBandIndicator and the first multiBandInfoList in the system information, according to the position of the frequency band indicated, the user terminal can know which AdditionalSpectrumEmission should be applied. In addition, in the radio resource control connection mode, by ignoring the second multiBandInfoList in the system information, the client can correctly apply the second multiBandInfoList In AdditionalSpectrumEmission.

The foregoing descriptions are only preferred embodiments of the present invention, and all equivalent changes and modifications made in accordance with the scope of the patent application of the present invention shall fall within the scope of the present invention.

30: Process

300, 302, 304, 306: steps

Claims (12)

A communication device for processing a system information (system information). The communication device includes: a storage unit for storing the following commands: receiving a handover command from a first cell; Before a system information, execute a handover operation from the first cell to a second cell according to the handover command; in a radio resource control (RRC) connection mode, receive from the second cell The system information includes at least one of a freqBandIndicator and a first multiBandInfoList; consider (not disregarding) the at least one of the freqBandIndicator and the first multiBandInfoList in the system information; determine the second one according to the handover command A frequency band of the cell; if the frequency band is indicated in the freqBandIndicator, a first AdditionalSpectrumEmission corresponding to the frequency band is applied; and if the frequency band is indicated in the first multiBandInfoList in the system information, it is applied in A second AdditionalSpectrumEmission corresponding to the frequency band in the system information; and a processing device, coupled to the storage unit, and configured to execute the command stored in the storage unit. The communication device according to claim 1, wherein the storage unit further stores the following command: when the freqBandIndicator is applied in the radio resource control connection mode, according to the freqBandIndicator, the first AdditionalSpectrumEmission in the system information is applied; or When the frequency band in the first multiBandInfoList in the system information is applied in the radio resource control connection mode, the second AdditionalSpectrumEmission in the system information is applied. The communication device according to claim 1, wherein the command considering the at least one of the freqBandIndicator and the first multiBandInfoList in the system information includes: when the communication device supports the frequency band, it is indicated in the system information When the at least one of the freqBandIndicator and the first multiBandInfoList determines that the communication device is capable of receiving and transmitting a data. A communication device for processing system information. The communication device includes: a storage unit for storing the following commands: receiving a system information from a first cell; and in the first cell, In a radio resource control (RRC) connection mode, a first AdditionalSpectrumEmission, a first ul-CarrierFreq, and a first multiBandInfoList in the system information are disregarded; and in the first cell, no Consider a first freqBandIndicator and a second multiBandInfoList in the system information; and a processing device, coupled to the storage unit, configured to execute the command stored in the storage unit. The communication device according to claim 4, wherein the storage unit further stores the following commands: Receive a handover command from a second cell; before receiving the system information, execute a handover operation from the second cell to the first cell according to the handover command; according to the handover command, Determine a frequency band of the first cell; if the frequency band is indicated in the first freqBandIndicator, apply the first AdditionalSpectrumEmission after the handover operation; and if the frequency band is indicated in the system information In the second multiBandInfoList, a second AdditionalSpectrumEmission corresponding to the frequency band in the first multiBandInfoList in the system information is used. A communication device used to process a system information (system information), the communication device includes: a storage unit for storing the following commands: in a radio resource control (radio resource control, RRC) idle mode, Receive a first system information from a first cell; after receiving the first system information, initiate a radio resource control connection establishment procedure with the first cell, which is used to enter a radio resource control Connection mode; in the radio resource control connection mode, at least one of a first freqBandIndicator and a first multiBandInfoList in the first system information is applied; if in the radio resource control connection mode, the communication device supports a frequency band (frequency band), which is instructed to apply a first AdditionalSpectrumEmission in the first system information in the first freqBandIndicator in the first system information; and if in the radio resource control connection mode, the communication device supports the Frequency band, which is indicated in the first multiBandInfoList in the first system information, using one of the first system information The second AdditionalSpectrumEmission; and a processing device, coupled to the storage unit, and configured to execute the command stored in the storage unit. The communication device according to claim 6, wherein the frequency band indicated in the first multiBandInfoList in the first system information is a first frequency band, which is sequentially listed in the first multiBandInfoList. The communication device according to claim 6, wherein the storage unit further stores the following command: when receiving a first message (message), the application is applied to the first cell and at least a secondary cell (SCell) An additionalSpectrumEmissionSCell-r10, wherein the first message sets the at least primary cell having a frequency band the same as the first cell, and includes the additionalSpectrumEmissionSCell-r10, which indicates for the first cell and the at least primary cell A network signaling (NS) of the first cell; a second message is received from the first cell, which is used to release all the at least primary cells; if the communication device supports the indicated in the first freqBandIndicator Frequency band, apply the first AdditionalSpectrumEmission in the first system information; and if in the radio resource control connection mode, the communication device supports the frequency band indicated in the first multiBandInfoList in the first system information, apply the second The second AdditionalSpectrumEmission in a system information. The communication device according to claim 8, wherein when the at least primary cell is activated, the communication device is applied to the additionalSpectrumEmissionSCell-r10 of the first cell and the at least primary cell. The communication device according to claim 8, wherein if the at least once required cell is not released and no at least once required cell is activated, if the communication device supports the frequency band indicated in the first freqBandIndicator, The communication device applies the first AdditionalSpectrumEmission in the first system information; and if the communication device supports the frequency band indicated in the first multiBandInfoList in the first system information, applies the second AdditionalSpectrumEmission in the first system information . The communication device according to claim 6, wherein the storage unit further stores the following instructions: receiving a delivery command from a second cell, which includes a third AdditionalSpectrumEmission, a carrierFreq, or a carrierFreq-v9e0; according to the delivery Command to perform a handover operation from the first cell to the second cell; apply the third AdditionalSpectrumEmission in the handover command to perform a transmission with the second cell; perform the handover operation Then, a second system information is received from the second cell; if the communication device supports the frequency band in the radio resource control connection mode, it is instructed to use the second freqBandIndicator in the second system information A fourth AdditionalSpectrumEmission in the second system information; and if the communication device supports the frequency band in the radio resource control connection mode, it is instructed to apply the second system in a second multiBandInfoList in the second system information A fifth AdditionalSpectrumEmission in the information; wherein the frequency band is obtained according to the carrierFreq or the carrierFreq-v9e0. The communication device according to claim 6, wherein the communication device supports a plurality of A communication of the cell.

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